Electrically-operated type-writer.



E. HAUSBERG.

ELECTRICALLY OPERATED TYPE WRITER.

aw/5%,, W m W APPLlCATlON FILED JULY25, I912- Patented Dec. 26,1916.

fi Lu witnesses i E. HAUSBERG. ELECTRICALLY OPERATED TYPE WRITER.

APPLICATION FILED IULYZS. I912.

. Patented Dec. 26,1916.

E. HAUSBERG.

ELECTRICALLY OPERATED TYPE WRITER.

APPLICATION FILED IULY25. I912. Patented Dec. 26,1916.

3 SHEETS-SHEET 3,

witnesses 17 11/00 1110 r STATES PATENT ormicn.

- ERNEST HAUSBERG, or CHARLES'CITY, IowL- ELECTBICALLY-OPERLATED TYPE-WRITER.

To all whom it may concern: I

.- Be it known -that 1,.Ennsstr HA'USBERG, a

citizen of thellnited; States, and a resident of Charles City,

fulEl'ectrically Operated Type Writer, of nhichthe following is a specification.

M y invention relates to that class of elec- Qtrically operated typewriters in which, by

,0, the depre SiOIL of a key, a selective magnet energized to thereby move a type bar operating device to position for printing, and immediately thereafter the power magnetis energized for the purpose of bringing the .5fsele'cted'type bar to printing position.

' The object of my invention is, broadly, to 1 --provide an electrically. operated typewriter of this class in whichthe number, size and weight of the'mechanically operated parts 10 ofthe machine are reduced to a minimum, and practically all of the elements are elec- =trically operated, to thereby insure greatspeed, ease and certainty of operation of the.

machine, reduce to a minimum the noise at- 5 tendant'upon its operation and the .wear upon the wearing parts; and 'also in this I connection, to reduce theexpense of manufacture and cost of maintenance of machines of this class. y

More specifically, it is my object to pro- -videan electrically opepated device of simple, durable and inexpensive construction, to be energized at the same time that a se- 'lective magnet is energized, for the purpose of operating a switch designed to close the circuit of the power magnet and to keep it closed until it is automatically opened upon the completion, or during the progress, of :the type bar stroke, thus insuring a full type 0' bar stroke even through the contact at the key be not longenough to fully energize the power magnet, and providing fora return of the type bar even through the contact at 'ithe' key continues. Av further object isto provide improved means of simple, a durable and inexpens ve construction, to be operated by theselective inagnets'for connecting the type bar operating levers with the universal operating bar Specification of Letters Patent. Application filed July 25, 1912. Serial No. 711,602.

the selectivemagnets and their 1n the county of Floyd and V 5 State of Iowa','have invented a new and use Patented net. as, 1916.

that is connected to the power armature, and also to provide an improved arrangementof wherebythey may be readily and easily assembled or disconnected.

A further object is to provide an improved arrangement of the type bar operating devices especially designed for use with type bars arranged for visible printing in connection with a series of selective magnets, whereby all of the type bars proper may be made identical in shape and arranged the. usual semi-circular form to strike upon a common printing center on the platen and at the same time to provide for moving eachjof the type bars through the necessary length of movement required for striking the platen, while having all of the type bars operated from a single power armature having exactly the same length of movement each time that-it is actuated.

My inventioncconsists in certain details,

in the construction, arrangement and combination of the various parts of the device, whereby the objects contemplated are at tained, as hereinafter more fully set forth, pointed out in my claims and illustrated in the accompanying drawings in which:

Figure 1 shows a side elevation of a typewriter embodying my invention, a part of the typewriter frame being broken away to show the internal construction Fig. 2 illustrates, diagrammaticaily, the electrical features embodied in my invention. Fig. 3 shows a central, vertical; longitudinal sectional view of the rear portion of my iniarmatures,

proved typewriter with the carriage omitted. Fig. t shows an enlarged detail view oi the electric switch device for making and break ing the circuit of the power magnet. in this view the circuit finishing and breaking device is shown in its ciosed position. 5 shows a front elevation of the spring actuated switch device, illustrated in Fig; i, and its support. Fig, 6 shows a detail sectional .view on the line 66 of Fig. 3. 7 shows a vertical, transverse, sectional view of a typewriter embodying my invention,

theportion at the right of said figure being Fig. i

taken on the dotted line aa of Fig. 3, and the portion at the left, on the dotted line bb of Fig. 3.

Referring to the accompanying drawings, I have used the reference numeral 10 to indicate generally the frame of the typewriter. On this frame is a sliding carriage 11 of ordinary construction containing the platen 12. The carriage is provided with an ordinary spacing mechanism illustrated generally by the reference numeral 13, which spacing mechanism is automatically operated in a manner to be hereinafter more fully described.

Mounted in the front of the typewriter frame is a series of keys 14, each of which rests upon a spring 15 which, when depressed, engages an electrical conducting bar 16 and closes an electric circuit from said bar through the depressed spring.

Mounted upon the frame in semi-circular arrangement below the platen is a series of type bars 17, pivotally supported on a curved shaft 18, and each provided with an up wardly projecting lug, 19. Immediately in the rear of and below the shaft 18 is another shaft 20 extending across the machine,

and pivoted to this shaft 20 is a series of le vers 21, one for each type bar, those in the center being shorter than those at the ends, as may be seen by comparing the central one, shown in Fig. 3, with the end one shown in Fig. 1. The levers 21, adjacent to the ends, have their upper portions inclined upwardly and inwardly in a direction toward the printing center of the platen and at the upper end of each of the levers 21 is a link 22 to connect it with the correspondin lug 19.

Arranged near the bottom of t e typewriter frame and extended transversely across the frame, is a bearing shaft 23 to which is pivoted a series of levers 24, one for each of the levers 21. These levers 24 vary in length; those at the ends being longer than the ones at the center, as clearly shown in Fig. 7 At the upper end of each of the levers 24 is a link 25 connecting it with the corresponding lever 21. The links 25 that connect to the central levers 21 are attached to the levers 21 near their lower ends, while the links 25 that are connected to the outer levers 21 are connecfid thereto near their upper ends, as shown in Fig. 1. The arrange ment is such that if any one of the levers 24 is moved a certain distance rearwardly at its upper portion, the corresponding type bar will be moved a sufficient distance to strike upon the printing center of the platen, and this is done by means of type bars that are all of the same size and shape, and that may be made from the same set of dies.

It is obviously a comparatively easy and inexpensive matter to cut the levers 21 and 24 to different lengths and to connect the links 25 thereto at different points,'as required to produce the desired result in operating the type bars by means of comparatively slight movements, all of the same length, applied to the levers 24.

In the following description and claims, the term type bar operating devices is intended to include the'levers 21 and 24 and the links for connecting them with each other, and with the type bars, or any equivalent construction.

My improvedmeans for operating a type bar upon the depression of a key, comprises a series of'selective magnets 26. This series is arranged in two rows extended transversely across the machine on opposite sides of the shaft 23, each row being attached to a supporting bar 27, and these selective magnets are electrically connected, one with each of the springs 15 of the keys, as will appear on the electric diagram shown in Fig. 2. Extended across the machin frame in front of the front row of magnets 26 is a shaft 28, and a similar shaft 29 is extended across the machine in the rear of the rear row of magnets 26. Pivoted to the shafts 28-and 29 are the levers 30 which extend toward each other with their ends in overlapping position. These levers 30 are arranged alternately, and each of them is provided with an armature 31 designed to coact with the adjacent magnet 26. Pivoted to the inner end of each lever 30 is a; rod orlink 32 extended mpwardly and connected to a lever 33 pivoted to the adjacent lever 24 at about the central portion of said lever 24. This point of connection will however, vary according to the lengths of the levers 24, being farther from the tops of the levers positioned at the sides of th machine, and somewhat nearer the tops of those levers at the middle of the ma chine. On the rear end of the lever 33 is a book 34, and at the front end of the lever 33 is a contractible coil spring 35, the other end of which is connected to a pin 36 on the lever 24, which spring normally holds the hook 34, its rod 32 and the corresponding lever 30 in an elevated position with the armature 31 above and out of contact with its magnet. The parts are so arranged that when the selective armature has been attracted to its magnet the lower pivotal point.

of said rod or link 32 will closely approach the pivotal point of the lever .24, so that said lever and said rod or link may move'backwardly and forwardly at their upper ends to the limited extent required in use, without moving the selective armature or its lever 30.

Pivotally connected to the shaft 23 are the arms 37 which are fixed at their upper ends to the universal operating bar 38. The upper end of this bar is beveled or inclined at 39 to coact with the beveled ends of the hook 34. Means. are provided, as will herein manner after appear, for moving thisuniversa'l op erating bar rearwardly by means of the power magnet hereinafter described, and it isreturned to its forwardly extended or normal. position by means of the spring 40.

' beveled E end .4574 as if .arm 46 nub-rim l Some of the advantages of the constructl'OIl and arrangement otthe means for connecting the levers 2% with the universal -operating bar are that the arrangement is of extremely simple and inexpensive conlg struction and easy to construct and assem- .b'le. Furthermore, the size and weight of the mechanically operated parts are reduced to a minimum in that when any selective magnet is energized, its corresponding lever ;1s moved downwardly only a slight distance, and this moves the small lever 33 downwardly far enough to connect the hook 34: with the universaloperating bar. Then. when the universal operating bar moves rearw'ardly the lever 24 and the type bar operating mechanism are actuated. Obviously, there is substantially no noise occasioned by the operation of these parts and the selective magnets may be made very small and may be operated by a comparatively slight electric current, for the reason that the size and weight of the parts they operate are very slight.

In order for any type bar operating de vice to be actuated, it is necessary that the power magnet he energized. pose a switch mechanism is provided which is actuated by a magnet in circuit with each of the selective magnets. This switch mechanism closes the circuit through the power magnet. All of the necessary operations for printing are made, therefore, upon the completion of a single electrical contact at a key. A novel and advantageous feature of my invention, however 18 that the-switch mechanism is so constructed that it automatically breaks the circuit of the power magnet upon the rearward movement of the power armature,- thus allowing the type bar to be returned to normal position without any release of the contact at the key and withoutany mechanical disconnecting of the parts. Another important feature is that the switch mechanism having closed the circuit of the power magnet, this circuit will remain closed irrespective of the continuance of the key contact, therein-- suring a full stroke of the type bar.

My improved switch device comprises a single electromagnet ell fixed to a suppprt 42 and arranged in a circuit in series with all of the selective magnets, as shown on i the diagram in Fig. 2, so that this magnet is energized substantially at the same time as the selected. one of the magnets 26.; Fixed to the support 42 which is attached to the frame, is an arched spring 43 having an arm 4.4. fixed to its free end and ex magnet 41. livote 48, fixed to the arm ja For this pur-- held just"out of contact.

when these springs 57 and 58 are in engagetended downwardly v psi r g 41$, An armature 45 is d I v of the spring 4 the arm 4141's a. se

horizontal posit'lo arm 46 on its upper sid, I a tolimit its downward-movement; ally supported, adjacent to the arm 46, is a switch lever 50 having a rearwardly 'extending arm- 51 carrying a roller 52. The upper end ojithe lever 50 is beveled at .53 and a contractible coil spring 54 is pivoted to the louter'ehd'of the lever 50 and extends upwardly and-is attached at its upper end to the support as. This spring is so arranged that when the lever 50 is in the position shown in Fig. 3, it will yieldingly hold the rear end of the arm 51 downwardly and when the lever 50 is moved to the position shown in .Fig. 4 on said spring, it will yieldingly hold the arm 51' upwardly. The spring 58, in the path of the roller 52, limits the forward movement of the upper end of the lever 50 and thepin ,54 limits the rearward movement of the upper end of the lever 50. This rearward movea pin, so that, when the key is finallyreleased, the arm lfiwill snap back-beyond the lever50 and assume the position shown in Fig. 3. A set screw 55 carried by the arm 63, is provided for the purpose of adjusting the point, of contact between it and the upper end of the arm 50, with refer.-. ence to the forward movement of the universal. bar.

Fixed toa support 56 are two contact springs 57 and-58 insulated from each other and extended forwardly, with their forward ends adjacent to each. other and normally The roller 52 standsimmediately below the spring 58; hence when the lever 50 is in the position shown in Fig.4, the roller 52 will hold the contact spring 58 against the contact spring 57, but when the lever 50 is in the position shown in. Fig. 3, the contact between the 115 said springs is broken. The power magnet as shown in'the fdiagram, is included in a circuit with this: circuit-breaking device comprising the springs 57 and Y58, hence ment the power magnet will be energized. I Pivotally supported below the powe r mag net are the arms 59' which support the power armature 60, adjacent to the power iagnct 61. The link 62,.connehts the power armature 60wi-th the universaloperatingbai: 38 and an. arm 63 on this link is extended upwardly and supports the set screw 55 The arm 63, instead of being upon, and a part of the link 62, may be-attached rigidly to, and extend upwardly from one of the arms 37.

The practical operation of this switch device is as follows: Assuming that the pants are in the position shown in Fig. 3, then upon the completion ofa current through the switch magnet 41, the arm 46 will be moved forwardly. This arm is in engagement with the upper end of the lever 50. This upper end will then be moved forwardly by the arm 46 until the upper end of the lever 50 passes forwardly beyond the spring 54, whereupon the said spring will tend to move the upper end of the arm 50 to its forward limit. hen the lever 50 is in the position shown in Fig. 4, the circuitclosing springs 57 and 58 are in engagement and the-power magnet is energized. As soon as the power magnet is} energized the armature 60 will be moved to it and this will move the universal operating bar and the arm 63 rearwardly, the set screw on the latter pressing against the upper end of the lever 50 until it passes the spring 54, whereupon the spring will move it to its rearward limit. The upper end of the arm 50 may move rearwardly before the arm 46 is so moved; for, if the arm 46 is still held .in its forward position by the magnet 41, the upper end of the arm 50 will be movedrearwardly and under the arm 46, the spring 48 allowing the latter to move upwardly slightly to permit the return of arm 50 to the position shown in Fig. 3. The better to accomplish this, it is desirable that, at the point where the upper end of the lever 50 passes forwardly beyond the spring 54, the arm 46 shall not quite have completed its full stroke or forward motion. If the upper end of the arm 50 should move rearwardly before the arm 46 is so moved, then when the key is released, the arm 46 will move rearwardly and then engage the upper end of the.

lever 50. Hence it does not matter whethe the arm 46 moves rearwardly before or after the rearward movement of the upper end of I the lever 50. It will be seen that moving the upper end of the lever 50 rearwardly releases the spring 54 from holding the contact springs 57 and 58 together, and that by adjusting the set screw 55 the time for thus moving the lever 50, and so breaking the power circuit, with reference to the progress of the type bar stroke, may be regulated.

It is obvious that only a very slight amount of power is necessary for actuating the circuit-making and breaking spring 58; hence all of the parts connected wlth this switchdevice may be of light weight and of small size, and inasmuch as the movement of these parts is very limited there w1ll be comparatively no' noise attendant upon their optrically connected to each of the conductor rods 16. A conductor wire 67 is connected to each of the contact springs 15 and leads to one of the selective magnets 26. A wire 68 is connected to each selective magnet and also to the relay magnet 41. I also preferably provide a condenser 69 between the wires 68 and 66 to prevent sarking at the key contacts. A wire 70 leads from the relay magnet to a return wire 71 connected to the battery 65. For the power magnet a second circuit is formed consisting of a wire 72 connected to the wire 66 and leading to the power magnet and a wire 73 connected to the power magnet and also connected to the switch springs 57 and 58 and communicating also with the return wire 71. I also preferably provide a condenser 74 in the circuit between the wire 73 and the wire 71 to prevent sparking between the springs 57 and 58.

In connection with the carriage shifting device 13, before described, I have provided for operating it by means of a lever 13", pivotally supported and arranged in the path of the power armature so that when the power armature is moved toward the power magnet, the lever 13 will be operated. Pivoted to the top of said lever is a link 13 the other end of which is connected to an arm 13 on the upright rock shaft 13, which latter is connected to, and designed to operate the ordinary carriage shifting mechanism 13.

The operation of the electrical circuits are substantially as follows: When the contact is made at a key, the correspondin selective magnet and the relay magnet w iich are connected in a series will be energized at substantially the same time. As soon as the switch device is moved to close the circuit making and breaking springs of the power magnet circuit, the said power magnet is energized and the operation of performing a type bar movement is completed.

Having thus described the construction and operations of each of the various subcombinations of elements in turn, it is believed that the operation of the machine, as a whole will be readily and easily understood.

It is obvious that by means of my improved construction, the completion of a single electric contact with any key will cause the machine to complete a type bar moveare extremely simple and may be carried on substantially noiselessly and with a minimum of friction and wear. Furthermore,

the parts are of simple construction and may bereadily and easily assembled or detached.

I claim as my invention:

1. In an electrically operated typewriter,

the combination of keys, type bars, apower magnet for operating the type bars, an electric circuit for the power magnet, meansoperated upon the movement of av key for closing the said circuit, and means independent of the key and operated by the power "the movement of any type bar, for breaking-the circuit through the power magnet.

3. In an, electrically operated typewriter, the combination of keys, type bars, a power magnet for operating the type bars, an electric circuit for the power magnet, means 0perated upon the movement of a key for closing the said circuit, means independent of the key for so maintaining the said circuit during the progress of a type bar stroke, and means operated by the power magnet for breaking the said circuit.

.4. In an electrically operated typewriter, the combination of keys, selective magnets, means for energizing a selective magnet when akey is depressed, a relay magnet, means for energizing the same when a selective magnet is energized, type bars, a power magnet, means operated by the relay magnet for establishing a circuit through the power magnet, when the relay magnet is energized, and -means for breaking the circuit through the power magnet when a type bar is being operated.

5. In an electrically operated typewriter, the combination of keys, selective magnets, means for energizing a selective magnet when a key is depressed, a relay magnet,

means for energizing same when a selective magnet is energized, type bars, a power magnet, an armature for the power magnet, means for operatively connecting the power armature with the type bars, a swltch device actuated by the relay magnet to close a circuit through the power magnet, and means operated by the power armature tor breaking the circuit through the power magnet. h

6. In an electrically operated typewnter, the combination of keys, type bars, a power magnet for operating the type bars, an electric circuit for the power magnet, means operated upon the movement of a key for closing the said circuit, and mennsoperated by the power magnet for breaking the said circuit, said means including. an adjustable element for regulating the time forbreaking the said circuit with reference to the progress of the type bar stroke.

7. In an electrically operated typewriter, the combination of keys, selective magnets, a relay magnet, an electric circuit' in which the keys, the selective magnets, and the relay magnet are included, type bars, an electric circuit in which the power magnet included, and a switch device actuated by the relay magnet to close the circuit in which the power magnet is included, and means operated upon the movement of a type bar for breaking the circuit through the power magnet.

8. Inan electrically operated typewriter, the combination of keys, selective magnets, a relay magnet, an electric circuit in which the keys, the selective magnets, and the relay magnet are included, type bars, type bar operating devices, a power magnet, an armature for the power magnet, means for operatively connecting the power armature with with the, type bars, an electric circuit in which the power magnet is included and a switch device actuated by the relay magnet to close the circuit in which the power magnet is included, to move the power armature in the direction required for operating a type bar, and means operated by the power armature for throwing the switch device to position for breaking the circuit through the power magnet.

9. In an electricallv operated typewriter, the combination of keys, selective magnets, a relay magnet, an electric circuit in which the keys, the selective magnets, and therelay magnet areincluded, type bars, type bar operating devices, a. power magnet, an armature for the power magnet, means for operatively connecting the power armature with the type bars, an electric circuit in which the power magnet is included and a switch device actuated by the relay magnet to close the circuit in which the power magnet is included to move the power armature in the direction required for operating a type bar, and means operated by the power armature for throwing the switch device to position for breakingthe circuit through the power 'mag'net, said means for operatin the switch device by the power armature emg provided with an adjustable element to regulate the time at which the'switch device is operatedto break the circuit.

10. In an electrically operated typewriter, the combination of keys, selective magnets, a relay magnet, an electric circuit in WlllCh the keys, the selective magnets, and the relay magnet are included, type bars, type bar operating devices, a power inagnet. an armature for the power magnet, means for operatively connecting the power armature with the type bars, an electric circuit in which the power magnet included, and a switch device comprising a spring actuated armature for the relay magnet, a pivoted arm yieldingly connected with said relay armature, a pivotally supported switch lever having one end in position to be engaged by said arm, a circuit making and breaking device included in the circuit with the magnet, an arm carried by the switch lever for operating said circuit making and breaking device, an arm connected with the power armature for moving the switch lever to position for breaking the circuit and a spring applied to the switch lever for yieldingly holding the switch lever at either limit of its movement.

11. In an electrically operated typewriter, the combination of keys, selective magnets, a relay magnet, an electric circuit in which the keys, the selective magnets, and the relay magnet are included, type bars, type bar operating devices, a power magnet, an armature for the power magnet, means for operatively connecting the power armature with the type bars, an electric circuit in which the power magnet is included and a switch device comprising a spring actuated armature for the relay magnet, a pivoted arm yieldingly connected with said relay armature, a pivotal ly supported switch 1: having one end in position to be e: d by said arm, a circuit making and bnakh'ig device included in the circuit with the ma gnet, an arm carried by the switch lever for operating said circuit making and breaking device, an arm connected with thepower armature for moving the switch lever to position for breaking the circuit, a spring applied. to the switch lever For yieldingly holding the switch lever at ither limit of its movement, and an adjustable stop device carried by the arm connected with the power armature to engage the switch lever.

12. In a device of the class described, the combination of keys, a series of selective magnets electrically connected with the keys, type bars, type bar operating levers pivoted to a bearing shaft and each operatively connected to a type bar, a universal operating bar, a hook-bearing lever pivoted to each of said type bar operating levers and designed to engage said universal bar, an armature foreach, of said selective magnets, a pivot 'l rod operatively connecting eacl: or" armatures to a corresponding hook-beari lever, said parts being so arranged th a. when a selective armature has been attracted to its magnet, the pivotal point of said rod r 7 '1 sum BEST AVAILABLE corp s will be brought close to the pivotal point of the type bar operating lever.

13. In a device of the class described, the combination of keys, :1 series of selective magnets energized, upon a depression of the keys. type bars, type bar operating levers, a universal operating bar, a hook bearing lever pivoted to each of said type bar operating levers and designed in one position to engage said universal bar, an armature for each selective magnet, and a link connected to each of said arinatures and to a corresponding hook bearing lever, the pivotal point of said links with. the armatures being arranged close to the pivotal points of said type bai' operating levers for the purposes stated.

14. In an electrically operated typewriter, the combination of keys, selective magnets for the keys arranged to be energized upon the depression of a key, a power magnet, a switch device between the selective magnets and the power magnet designed to close the circuit of the power magnet and to keep it closed until it is automatically opened during the progress of the type bar stroke, and type bars capable of being operated by the said power magnet when the latter is energized whereby the full type bar stroke is insured even though the contact at the key be not long enough to fully energize the power magnet, said switch also being designed to permit the return of the type bar even though the contact at the key continues.

15. In an electrically operated typewriter, the combination of keys, a series of selective magnets electrically connected with the keys, type bars, a bearing shaft, a series of type bar operating levers pivoted to said bearing shaft and each operatively connected with a type bar, auniversal operating bar, a power magnet for operating the same, a hook bearing lever pivoted to each c.' said type bar operating levers and dced to engage said universal bar, an ar for each selective magnet, and a ed link for operatively connecting each at said hook-bearing levers to a corresponding armature.

if). in an electrically ope ated typewriter, the combination of keysra series of selective magnets electrically connected with the keys, type bars, a power magnet for operating the type bars, means for energizing the power magnet upon a depression of the key, an armature for the power magnet, and a circuit breaking device :nitomatieally operated upon a movement of said power armature for breaking the circuit of the power magnet.

ii. in an electrically operated type *-'riler having selective magnets for moving type bar devices to position to'be operated and a power magnet for moving tne selected type bar device to printing position, the

combination of keys, means operated upon V the combination of keys, type bars, type bar operating devices, a power magnet, an armature therefor, means operated upon the depression of a key for operatively connectmg a corresponding type bar operating device with the power armature, an electric circuit fonthe power'magnet, a circuit making and breaking device therefor, means also operated upon the depression of a key for moving the said device to close the said circuit, means independent of the key for maintaining the said device in closed position during the progress of a type bar stroke, and means operated by the power magnet for moving the said device to break the said circuit.

19. In an electrically operated typewriter, the combination of keys, type bars, a power magnet for operating the type bars, an electric circuit for the power magnet, a circuit making and breaking device for the said circuit, a spring for maintaining the said device in'open or closed position, means operated upon the movement of a key for moving the said device to closed position, and means operated by the power magnet for moving the said device to open position so as to break the circuit of the said magnet.

20. In an electrically operated typewriter, the combination of keys, type bars, a power magnet for operating the type bars, an electric circuit for the power magnet, a magnet designed to be energized upon the depres sion of a key, means operated by the said magnet for closing the circuit of the power magnet, and means operated by the power magnet for breaking the said circuit.

21. In an electrically operated typewriter, the combination of keys, type bars, selective magnets means for establishing an electriccircuit through a selective magnet upon the depression of a corresponding key, a type bar operating device for each type bar, means actuated by a selective magnet, upon the completion of a circuit through it, for moving a corresponding type bar operating device to operative position, a power'magnet, an armature therefor, means operated by the said armature for actuating a type bar operating device when the latter has been moved to operative position, means for also establishing an electric circuit through the power magnet upon the depression of a key, and means operated by the power magnet for breaking the said circuit.

22. In an electrically operated typewriter,

the combination of keys, type bars, selective magnets, means for establising an electric circuit through a selective magnet upon the making of an electrical contact at a corresponding key, a type bar operating device for each'tvpe bar, means actuated by a selective magnet, upon. the completion of a circuit through it, for moving a corresponding type bar operating device to operative position, a power magnet, an armature therefor, means operated by the said armature for actuating a type baroperating device when the latter has been moved to operative position,

a universal magnet energized upon and by the completion of a circuit through any selective magnet, an armature therefor, means operated by the said armature for closing a circuit through the power magnet, and means for automatically breaking the said circuit, irrespective of the breaking of the circuit through the selective magnet, upon a movement of the power armature toward its magnet.

' 23. In an electrically operated typewriter, the combination of keys, type bars, a type bar operating device for each type bar, means actuated upon the depression of a key for moving a corresponding type bar operating device to operative position, a power magnet, an electric circuit therefor, an armature for the power magnet, means operated by the said armature for actuating a. type bar operating device when the latter has been moved to operative position, a circuit making and breaking device for the power magnet, means also actuated upon the depression of a key for moving the said circuit making and breaking device to close the circuit of the power magnet, a device for maintaining said circuit making and breaking device in closed position, and means actuated upon a movement of the power armature toward its magnet for releasing the said holding device from its said action, said means including an adjustable element for regulating the time for releasing the said holding device with reference to the progress of the type bar stroke.

24. In an electrically operated typewriter, the combination of keys, type bars, pivoted type bar operating levers, each operatively connected with a type bar, a universal operating bar, a power magnet for operating the said bar, an electric circuit for the power magnet, hook bearing levers each pivoted to one of the said type bar operating levers and designed to engage the said universal operating bar, pivoted levers, pivoted links for operatively connecting each of the last named pivoted levers with a corresponding hook bearing lever, means operated upon the movement of a key for moving one of the last named pivoted levers so as to cause the corresponding hook bearing lever to engage the universal bar, and means also operated upon the movement of a key for closing the circuit of the power magnet.

pivoted levers and designed to engage the universal operating har, means operated upon the movement of a key for causing a corresponding hook bearing lever to engage the universal operating bar, and means also operated upon a moiement of the key for closing the circuit of the power magnet.

Des Moines, Iowa, July 6, 1912.

ERNEST HAU SBERG.

\Vitnesses:

R. V. MCCAMMOND, Dorms HEDDINS. 

